One of my friends met his wife through on line dating. He was/is very overweight. His wife is the same size as him - they were that same size when they met. They now have a child the same age as our son. A couple of years ago they went on the only liquid diet that was popular then - lighter life or something like that and lost a huge amount of weight though they are still big people.
He'd never had a girlfriend before his wife - though he was very popular. He just didn't have confidence. He joined a group which my now hubby and I belonged to. It was aimed at people who wanted to meet new friends or do things you normally do as a group - like going to the theatre or out to dinner. It wasn't a singles group, in fact DH and I stayed members for three or four years after we married, so there wasn't that 'meat market' feeling a few of our friends had got from some groups they'd joined. Anyway our friend made a load of friends - he swears that as he was accepted for who he was rather than an 'ideal' shape, he got the confidence to do on line dating.
His wife on the other hand, had been in a long term relationship before she met her hubby - and she'd never been less than a size eighteen from her early teens. But she's a super confident lady and lovely with it.
As for the thing about blokes only going for a size ten. I've never been less than a size 14 and have been married twice. When I left my first hubby I had a whale of a time - we'll leave it at that...but being a size 14 or larger has certainly not caused me too many problems.
DH said the thing he liked about me when we met was that he felt that what he saw was what he got. He was really put off of some women he'd met through various dating clubs who'd tried to be something they weren't because they thought that was what he or another man would want. He didn't like the feeling that behind the face was a different person, if that makes sense?? And he could sense a 'desperation' that made him feel that it wasn't him that the woman was interested in, it was just that he was a man and any man would do. My attitude was I'm a size 14, enjoying my life and if he wanted to be part of it that was great as I liked him a lot but I wouldn't drop down sobbing if we didn't date as I was doing just fine in that department thanks very much. And he found that intriguing (his exact words).
The point is be yourself, if you're a size 10 fine, a size 16, fine. If you feel the need to lose weight do it but do it for you. After all, would you only date blokes over six foot tall or only under a certain age or only with a six pack that would put Mr Universe to shame? In my dreams maybe, but my gorgeous hubby only fits the first of those. I wouldn't swap him for the world so why would my not being a 'perfect' size 8 or 10 be an issue when he's not Mr Perfect on paper either?